Challenge
The project site presented a set of rigorous engineering limitations that made standard lifting solutions inapplicable:
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Complex Pit Geometry: The platform had to be installed in a U-shaped pit measuring 6980mm in length and 5740mm in width. A 100mm safety clearance from the pit walls was mandatory throughout the entire 11,000mm vertical journey.
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High-Altitude Stability Requirements: Operating at an 11-meter elevation, the platform required a natural sway of
≤≤
0.5% and a tilt differential of
≤≤
50mm to ensure the safety of personnel performing delicate testing operations.
-
Zero-Wireless Mandate (EMI Compliance): Due to the sensitivity of the compression field testing equipment, the facility prohibited all wireless communication. Every control signal had to be transmitted via physical, shielded cabling.
Solution
To address these challenges, we engineered a bespoke U-Shaped Scissor Lift Platform with an integrated telescopic deck system and a hardwired PLC logic controller.
1. Structural Logic and “U” Architecture
The chassis was constructed from high-tensile structural steel, precision-aligned to the U-shaped pit. The lift utilizes a heavy-duty scissor mechanism optimized for long-stroke stability, ensuring the platform remains rigid even when subjected to horizontal lateral forces at maximum height.
2. Independent Telescopic Zones (A, B, and C)
To provide flexible access to the test subject, the platform features three independently controlled telescopic decks:
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Zone A: A 3000mm wide extension reaching up to 1500mm, with a dedicated 350kg load capacity.
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Zones B & C: Optimized for lateral proximity with 700mm extensions.
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Safety Sensing: Zone A includes non-contact photoelectric limit switches that automatically lock movement when within 50mm of any structural obstacle.
3. EMI-Secure Wired Control System
The electrical architecture is strictly hardwired, featuring a PLC system that manages complex interlocks. The system prevents any vertical movement if telescopic decks are extended or if the 1100mm safety railings are not mechanically secured.
